Inflating device for automobile-tires.



A. G. DANVER.

INFLATING DEVICE FOR AUTOMOBILE TIRES.

APPLIGATION FILED AUG. 10, 1911.

1,01 1,121. Patented Dec.5, 1911.

2 $10 Z6 I%I x 177: 0 Q3 i ATT .ANDREW C. DANVER, F PITTSBURGH,PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO WILLIAM ELY OF PROVIDENCE, RHODEISLAND.

INFLATING DEVICE FOR'AUTOMOBILETIRES.

Specification of Letters Patent.

Application filedAugust 10, 1911.

Patented Dec. 5, 1911.

Serial No. 643,472.

' A State of Pennsylvania, have invented certain new and usefulImprovements in Inflating Devices forv Automobile-Tires, of which thefollowing is a specification.

My invention relates toimprovements in inflating devices for automobiletires.

The purpose of my invention is to utilize one of the cylinders of anautomobile engine as an air compressor and connect the same with thetire by a suitable connection,

so that the tire may be inflated to any required pressure up to thecapacity of the engine. I accomplish this object by the mechanism shownin the drawings accompanying this application in which drawings Figure 1represents a portion of an automobile cylinder and piston in verticalsection with my device attached thereto. a perspective detail of themember operating to cut out the valves of the engine. Fig. 3, ahorizontal cross section on the line mw of Fig. 1. Fig. 4:, a verticalsection showing one position of my cut-out mechanism, and Fig. 5, avertical section through the check valve by which the air passes fromthe cylinder to the tube leading to the tire.

The same portions of the invention are represented by the same lettersthroughout the several views.

In Fig. '1, which is a vertical section through a portion of thecylinder, 7) represents the piston showing its rings in position; 0, thespace or chamber in the cylinder 40 above the piston; w the water spacesurrounding the cylinder; 12, o and g, the valve, valve stem and valvespring, respectively. As the cons'tructionof both exhaust and inletvalves is the same, and as my cut-01f device must be applied to bothvalves, 17 may represent both exhaust and inlet valves. 71 is the portleading from the valve chamber to the interior of the cylinder; 71, theinlet pipe leading from. the carbureter or exhaust pipe,

0 as the case may be; i thesp'ace below the valve seat; 8, an ordinaryspark plug and A a cut-out valve which is the principal feature of myinvention, and WhlCh is screwed into the-upper part of the valve chamberabove the valve '0 as shown in Fig. 1.

Fig. 2,,

Fig. 5 shows in vertical section a system of check valves of the usualball form which permits air to enter the chamber 0 upon the downwardstroke of the piston by means of the orifice b in the valve systemand'forces it out through the tube 6 upon the up stroke of the piston p.This check valve system is connected with the chamber 0, as shown inFig. 1, by the tube 7); while the tube b leads directly to the tire tobe inflated. The check valve system is provided with an ordinary cock I)by which it may be shut 01f entirely from the chamber a.

The principal feature of my device is shown in the member A seen inperspective in Fig. 2 and in vertical section in Figs. 1 I and 4. InFig. 2 this feature of my invention is seen to consist substantially ofa cup shaped member A provided with a hexagonal head a pierced andthreaded for a spark plug as shown at a; it also has a projecting flangea. Immediately below this flange, the body of the cup. is threaded asshown at a of Fig. 2, and adapted to be screwed into the upper portionof the valve chamber as so shown best in Fig. 4. That portion of thebody of the member A directly below the threaded portion a is reduced indiameter and is fitted to the valve chamber above the valve by an'airand gas tight fit preferably being ground therein, but at the same timecapable of being revolved in said valve chamber by means of thehexagonal head a.

A portion of the lower wall a of the cup A is removedor cut away, asshown at a, and this cut away portion in area is approximately equal tothe port 21 of the cylinder, and when said cup is in position in thevalve chamber, the cut away portion a is capable of being brought intoopposition with or away from the port 2' by revolving the cup A by meansof the hexagonal head (1*. The shape and size of the cavity of the cup Aare such as not to interfere in any way with the valve win itsmovements.

It will readily be seen that if the cup A is turned in such a mannerthat the opening a is in opposition to the port 71 then the engine willoperate in its usual way, the cutout valve A in no manner interferingwith such operation. It will also clearly be seen that if the cut-outvalve A is turned so that the space a is not in opposition with the port71 then the cylinder is entirely cut off from the valvesand the resultis the same with both inlet and exhaust valves, both requiring to befitted with my device, and both operatlng in precisely the same manner.

The operation of my invention is as follows :Wl1en it is desired to usethe engine as an engine, or, in other words, to permit it to run as apart of the motive power of the automobile, the cock I) in the checkvalve system is shut, and the cut-out valve A is turned in both exhaustand inlet chambers so that the cut away portion or space a is inopposition with the inlet port '5 The engine will now operate in itsusual manner as a part of the motive power of the automobile; but whenit is desired to utilize the cylinder for the purpose of inflatingtires, the cock I) in the check valve system is opened and the cut-outvalve A is turned in both exhaust and inlet chambers so that the space ais no longer in opposition with the port 1?. By now causing the cylinderof a multi-cylinder automobile to which my device is attached to beoperated by the remaining cylinders, the cylinder so fitted with mydevice becomes a powerful pump; the piston inits downward stroke drawingin air through the tube b and orifice I) and forcing it on its upwardstroke out through the tube b, b. and 6 into the tire desired to beinflated, the operation continuing until the desired compression isreached, when the cock b is closed the cut-out cup A in both exhaust andinlet chambers turned so that the space a is in opposition to the port2' and the cylinder again becomes a part of the motive power of theautomobile.

One especial advantage of my invention is the fact that the cut-outvalve A is so close to the cylinder chamber a that the compression inthe chamber when the cylinder operates as a pump is much higher than asthough the cut-out valve were located at a more remote part of the inletor exhaust system, compression is reduced practically contents of thecylinder itself.

My device is attached to but a single cylinder of a multi-cylindersystem and the cutto the inasmuch as the air space subject to.

out valve A is attached to both the inlet and exhaust valve chambers, asalready stated.

Having now set forth my invention, what I claim and desire to secure byLetters Patent is 1. A device for inflating automobile tires consistingof one cylinder of a multi-cylindered automobile engine; a cut-out valveoperating to connect with or disconnect from the port of said cylinderthe exhaust and inlet valves thereof; and means for connecting saidcylinder with the tire to be inflated, sub stantially asset forth;

2. A device for inflating automobile tires consisting of one cylinder ofa multi-cylindered automobile engine; a valve chamber located betweenthe exhaust and inlet-valves of said cylinder and the port thereof; acutout valve situated in said chamber and operating to make orbrealccoi'mection as desired between said valves and said port; andmeans for connecting said cylinder with the tire to be inflated,substantially as set forth.

3. A device for inflating automobile tires consisting of one cylinder ofa multi-cylindered automobile engine a valve chamber located between theexhaust and inlet valves 'ofsaid cylinder and the port thereof; acupshaped cut-outvalve situated in said chamber and having a portion ofits lower wall removed so that the space left in said wall by suchremoval may at will be brought into' and out of opposition to the portof the cylinder, thus making or breaking connection between said valvesand said port; in combination with a system of check valves connectedwith the upper portion of said cylinder and operating to admit air intothe cylinder on the downward stroke of the piston and to transmit it tothe tire from the cylinder on the upward stroke of the piston,substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

. ANDREW o. DANVER.

Witnesses:

J. M. ELIAS, JOHN J. RULLY.

